/Engine/Plugins/Editor/UVEditor/Source/UVEditor/Public/UVEditorSubsystem.h
Needs to be called when a UV editor instance is closed so that the subsystem knows to create a new one for these objects if they are opened again.
virtual void NotifyThatUVEditorClosed ( [TArray](API\Runtime\Core\Containers\TArray)< [TObjectPtr](API\Runtime\Core\Delegates\TObjectPtr)< [UObject](API\Runtime\CoreUObject\UObject\UObject) >> ObjectsItWasEditing )